<?php
//class nay chi su dung de nghien cuu chua dua vao dung trong project
class AuthController extends Zend_Controller_Action
{
    public function init()
    {
        $this->_auth = Zend_Auth::getInstance();

        $this->_errorMessenger = new Zend_Controller_Action_Helper_FlashMessenger();
        $this->_errorMessenger->setActionController($this)->init();
        $this->_errorMessenger->setNamespace('error');

        $this->_noticeMessenger = new Zend_Controller_Action_Helper_FlashMessenger();
        $this->_noticeMessenger->setActionController($this)->init();
        $this->_noticeMessenger->setNamespace('notice');

        $this->view->errors = $this->_errorMessenger->getMessages();
        $this->view->notices = $this->_noticeMessenger->getMessages();
    }

    public function preDispatch()
    {
        if (! $this->_auth->hasIdentity()) {
            if (! in_array($this->_request->getActionName(), array(
                    'logout', 'identify', 'forgot-password', 'reset-password', 'restricted'))
                ) {
                $this->_redirect('/auth/restricted');
            }
        }
    }

    public function restrictedAction()
    {
        // Shows access restricted page
    }

    public function logoutAction()
    {
        $this->_auth->clearIdentity();
        Zend_Session::destroy();
        $this->_redirect('/');
    }

    public function identifyAction()
    {
        if ($this->_request->isPost()) {
            $username = $this->_getParam('username');
            $password = $this->_getParam('password');

            if (empty($username) || empty($password)) {
                $this->_flashError('Username or password cannot be blank.');
            } else {
                $user = new Student_Model_DbTable_Student();
                $result = $user->login($username, $password);

                if ($result->isValid()) {
                    $user->fromArray((array) $this->_auth->getIdentity());

                    if ($this->_getParam('changepass') || $user->is_password_expired) {
                        $this->_redirect('auth/change-password');
                        return;
                    }
                    $this->_doRedirect($user);
                    return;
                } else {
                    $this->_doFailure($result->getIdentity());
                }
            }
        }
        $this->_redirect('/');
    }

    public function changePasswordAction()
    {
        if ($this->_request->isPost()) {
            $username = $this->_auth->getIdentity()->username;
            $formData = $this->_request->getParams();

            if (empty($formData['password'])
                || empty($formData['new_password'])
                || empty($formData['confirm_password'])
            ) {
                $this->_flashError('Password cannot be blank.');
                $this->_redirect('auth/change-password');
            } elseif ($formData['new_password'] !== $formData['confirm_password']) {
                $this->_flashError('Password and confirmation do not match.');
                $this->_redirect('auth/change-password');
            } else {
                $user = new Student_Model_DbTable_Student();
                $result = $user->login($username, $formData['password']);

                if ($result->isValid()) {

                    $user->updatePassword($username, $formData['new_password']);
                    $this->_flashNotice('Password updated successfully!');
                    $this->_redirect('/');
                } else {
                    $this->_flashError('Invalid username or password!');
                    $this->_redirect('auth/change-password');
                }
            }

        }

        if ($this->_getParam('force_password_change')) {
            $this->view->notice = 'Your password has expired. You must change your password to continue.';
        }
    }

    public function forgotPasswordAction()
    {
        if ($this->_request->isPost()) {
            // Pseudo-random uppercase 6 digit hex value
            $resetCode = strtoupper(substr(sha1(uniqid(rand(),true)),0,6));

            Doctrine_Query::create()
                ->update('dUser u')
                ->set('u.reset_code', '?', array($resetCode))
                ->where('u.username = ?', array($this->_getParam('username')))
                ->execute();

            $this->_doMail($this->_getParam('username'), $resetCode);

            $this->_flashNotice("Password reset request received.");
            $this->_flashNotice("An email with further instructions, including your <em>Reset Code</em>, has been sent to {$this->_getParam('username')}.");
            $this->_redirect("auth/reset-password/username/{$this->_getParam('username')}");
        }
    }

    public function resetPasswordAction()
    {
        $this->view->username = $this->_getParam('username');
        $this->view->reset_code = $this->_getParam('reset_code');

        if ($this->_request->isPost()) {
            $formData = $this->_request->getParams();
            if (empty($formData['username']) || empty($formData['reset_code'])) {
                $this->_flashError('Username or reset code cannot be blank.');
                $this->_redirect('auth/reset-password');
            } elseif ($formData['new_password'] !== $formData['confirm_password']) {
                $this->_flashError('Password and confirmation do not match.');
                $this->_redirect('auth/reset-password');
            } else {
                $user = new Student_Model_DbTable_Student();
                $result = $user->loginWithResetCode($formData['username'], $formData['reset_code']);

                if ($result->isValid()) {
                    $user->updatePassword($result->getIdentity(), $formData['new_password']);

                    $user->fromArray((array) $this->_auth->getIdentity());

                    $this->_flashNotice('Password updated successfully!');
                    $this->_doRedirect($user);
                } else {
                    $this->_doFailure($result->getIdentity());
                    $this->_redirect('auth/reset-password');
                }
            }
        }
    }

    protected function _doRedirect($user)
    {
        $this->_helper->Redirector->gotoUserDefault($user);
    }

    protected function _flashError($message)
    {
        $this->_errorMessenger->addMessage($message);
    }

    protected function _flashNotice($message)
    {
        $this->_noticeMessenger->addMessage($message);
    }

    protected function _doFailure($username)
    {
        $user = Doctrine_Query::create()
            ->from('dUser u')
            ->select('u.is_locked')
            ->where('u.username = ?', array($username))
            ->fetchOne();

        if ($user->is_locked) {
            $this->_flashError('This account has been locked.');
        } else {
            $this->_flashError('Invalid username or password');
        }
    }
}